Folder Compare failed or not working — what can you do?

What you can do

• Open Folder Compare in Chrome / Edge on https or local dev with two small sample folders.
• Select both sides, then Compare; set Format to All formats on the desk.
• Compare similarly structured trees; tidy nesting if prefixes differ.
• Still stuck? Try a private window, or read the full guide /#article/foldercompare.

FAQ

What limitations should I know?

Only folder listings and names are read; nothing is uploaded and file bytes are not compared. A secure context is required for directory pickers.

When might it fail?

Missing read permission, one side empty, all formats unchecked, or no directory picker support.

What should I check when results look wrong?

Confirm format/sort, whether relative paths match, and the meaning of red (left-only), green (right-only), and amber (folder contents differ).

Any other important notes?

Back keeps the selected folders; Reset or leaving the page clears the session.